496 Tlie Trials of TJiresldng MacMms at Boncaster. 
has some special features ; the whole of the reciprocating parts are 
driven by a single five-throw crank (D), which passes under the five 
shakers and is connected to them by brackets (G) two feet long, 
Sectional Elevation of Messrs. Gibbons d: Rohinsons 
Tlrcil.'lvg Machine {Art. 4142). 
which take a firm hold of each shaker. To the same brackets 
are connected stiff ash connecting rods (i), which operate the 
shoes, which are support ed in the usual way by vertical elastic 
ash ties, but have also b olted to them rigidly the rods from the 
